2) “configure: error: mod_deflate has been requested but can not be built due to prerequisite failures”
Solutions :
For redhat users # yum install zlib zlib-devel
For ubuntu users # aptitude install zlibc zlib1g-dev

This is definitely my first choice.Qmail-Remove will remove messages containing a particular string from your Qmail queue.

Mails are *not* deleted from the queue! They are only stored, temporarily, in $qmail-queue/yanked/, where you can view them individually and restore them back to the queue manually. There is currently no support for restoring them automatically.

By default, Qmail-Remove assumes that your Qmail queue is stored in /var/qmail/queue, but this can be changed with a command line option. Similarly, Qmail-Remove assumes that your queue “split” is 23 by default, among other things.

If you want to check your qmail queue using the following command

# /var/qmail/bin/qmail-qstat

Output looks like

messages in queue: 567154
messages in queue but not yet preprocessed: 3

Install Qmail-Remove

First you need to download latest version from here current version is Qmail-Remove 0.95

Now you have qmail-remove-0.95.tar.gz file and now you need to extract using the following command

#tar -zxvf qmail-remove-0.95.tar.gz

Now you should have qmail-remove-0.95 folder go in to the directory and run the following commands

#make

#make install

This will complete the installation.

Now you need to create a directory named “yanked” in the qmail queue directory you intend to use before using this program.

#mkdir /var/qmail/queue/yanked

Using qmail-remove

Syntax

qmail-remove [options]

Available options

-e use extended POSIX regular expressions

-h, -? this help message

-i search case insensitively [default: case sensitive]

-n limit our search to the first bytes of each file

-p specify the pattern to search for

-q specify the base qmail queue dir [default: /var/qmail/queue]

-r actually remove files, without this we’ll only print them

-s specify your conf-split value if non-standard [default: 23]

-v increase verbosity (can be used more than once)

-y directory to put files yanked from the queue [default: /yanked]

-X modify timestamp on matching files, to make qmail expire mail is the number of seconds we want to move the file into the past.specifying a value of 0 causes this to default to (604800)

-x modify timestamp on matching files, to make qmail expire mail is a date/time string in the format of output of the “date” program.

Examples for qmail-remove

Before doing any thing related to qmail queue you need to stop the qmail service using the following command

#/etc/init.d/qmail stop

To delete mails from Que,

#qmail-remove -r -p

# qmail-remove -r -p gtre.ac.net

324001: yes
moved mess/0/324001 to yanked/324001.mess
moved remote/0/324001 to yanked/324001.remote
moved info/0/324001 to yanked/324001.info
324024: yes
moved mess/0/324024 to yanked/324024.mess
moved remote/0/324024 to yanked/324024.remote
moved info/0/324024 to yanked/324024.info

This will remove all emails in que with “gtre.ac.net” in it and place it in /var/qmail/queue/yanked folder.

qmhandle

qmHandle is a simple program which allows you to view and manage the qmail message queue.

qmHandle Advantages

You can read the qmail queue, like you do with the qmail-qread program.

However, the output of this program is improved over qmail-qread, with the output of the message subjects and color capabilities;

You can print queue statistics, like qmail-qstat, with color capabilities;

You can view a message in the queue;

You can remove one or more messages from the queue;

Written in Perl, and therefore easily customizable and truly multiplatform.

Install qmhandle

First you need to download latest version from here and the current version is qmhandle-1.2.0

Now you have qmhandle-1.2.0.tar.gz file you need to extract using the following command

#tar xzvf qmhandle-1.2.0.tar.gz

You should be having qmhandle-1.2.0 folder go in to the folder and you need to edit the qmHandle file to configure the following settings

my ($queue) = ‘/var/qmail/queue/’;

my ($stopqmail) = ‘/etc/init.d/qmail stop’;

my ($startqmail) = “/etc/init.d/qmail start”;

my ($pidcmd) = ‘pidof qmail-send’;

Using qmHandle

Available options for qmHandle

Available parameters are:-a : try to send all queued messages now (qmail must be running)

-l : list message queues

-L : list local message queue

-R : list remote message queue

-s : show some statistics

-vN : display message number N

-dN : delete message number N

-Stext : delete all messages that have/contain text as Subject

-D : delete all messages in the queue (local & remote)

-V : print program version

Additional (optional) parameters are:

-c : display colored output

-N : list message numbers only (to be used either with -l, -L or -R)

Examples

list message queues

#qmHandle -l

delete all messages that have/contain text as Subject

#qmHandle -l -S yahoo.com.tw

Other Solutions

1)You can edit the /var/qmail/control/queuelifetime file this is the file to control how long a message stays in a queue.Just put a number (to represent seconds)in this file.By default 86400 sec Will keep the mail for 1 day and expire after that.Here you can change this value to 1 and restart your qmail server it should clear your qmail queue.

2)Deleting mails from qmail queue

Following commands can delete all mails from your qmail mail server queue.